Royal protocol is one of the things that truly distinguishes the British royal family from other celebrities – no matter whether you’re Queen Elizabeth or a young Prince George, there will always be strict rules and restrictions that govern your every move – especially in public. Let’s take a look at some of them. Lady Louise Windsor: Queen Elizabeth’s favourite grandchild? Travel bubbles There is a long-standing protocol that two heirs to the British throne cannot travel together. This is to preserve the line of succession in case of an accident. The rule dates back to when air travel was not as safe as it is today. The queen has relaxed the rule since Prince William has had children, which is why the Cambridges have travelled together on several royal tours, such as to Canada in 2016, and Germany and Poland in 2017. However, it was recently reported that will all change when Prince George, William’s oldest son and third in line to the throne, turns 12, and his father will not be able to travel with him again. Who married Queen Elizabeth’s eldest granddaughters? Keep steady eye contact When shaking hands with the general public, royals are expected to maintain strong eye contact. “A royal handshake should consist of two-to-three pumps, with your palms open and thumbs down,” according to former British butler and etiquette expert Grant Harrold. The handshakes must not appear to give preferential treatment to one person over another. Why does Queen Elizabeth hate wedges? 10 weird fashion protocols for royal women Chin up! There are even etiquette rules relating to walking down stairs and simply standing still. Royal women should always have their chins parallel to the ground when walking downstairs or standing, and their hands must also be at their sides. Stand up, sit down When the queen stands, so does everyone in her presence. And don’t even think about sitting down before she does. Did she choose a British or Italian designer? Inside Kitty Spencer’s royal wedding Don’t touch the bag According to Capricia Marshall, author of Protocol , Queen Elizabeth’s handbag is not just for looks; she actually uses it to send secret messages to her staff, and under no circumstance are you allowed to touch her bag. “If it’s on one part of her arm, it means the meeting is going fine, leave me alone,” explains Marshall. “But if she lowers it, it means, ‘ End this now. I want to go .’” A palace to call home: the queen’s 5 royal residences Who’s wearing the trousers? Royal observers may have noticed Prince George wearing trousers at Wembley when on regal display with his parents Prince William and Kate Middleton for the Euro 2020 finals. So what’s the big deal? Royal boys wear shorts until age eight, after which time they are allowed to wear trousers. Prince George recently turned eight – however, Prince Louis has also been spotted wearing trousers and he is only three. A lapis lazuli orb for a baby? 5 of Prince George’s most OTT birthday gifts The protocol in fact dates back to the 16th century, when royal boys had to wear gowns or dresses until the age of eight, Harrold explained to the BBC. Then they would wear breeches. This transition was known as breeching, which in the Victorian era signified a young boy’s step towards manhood. When this dress tradition died out, it was replaced by shorts and trousers. Want more stories like this? Sign up here. Follow STYLE on Facebook , Instagram , YouTube and Twitter .